Route · SFO → BWI · 2020–2025 BTS data
San Francisco to Baltimore
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SFO to BWI (San Francisco to Baltimore) ranks #3631 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.6%
- On-time
- +5.6 pts
- vs US avg
- 50 min
- Delay when late
- 2,309
- Flights
- #3631 of 4927
- Corpus placement
Cancelled
0.4%
Best Month
Apr 2025 89%
Worst Month
Aug 2025 74%
Distance
2,457 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 87 | 19 | 0 | 0 | WN,UA |
| Nov 2025 | 80 | 12 | 0 | 0 | UA,WN |
| Oct 2025 | 105 | 12 | 0 | 0 | UA,WN |
| Sep 2025 | 87 | 22 | 0 | 1 | UA,WN |
| Aug 2025 | 101 | 26 | 0 | 0 | WN,UA |
| Jul 2025 | 115 | 27 | 1 | 4 | UA,WN |
| Jun 2025 | 110 | 26 | 1 | 0 | UA,WN |
| May 2025 | 68 | 13 | 0 | 1 | UA |
| Apr 2025 | 55 | 6 | 0 | 0 | UA |
| Mar 2025 | 33 | 4 | 0 | 0 | UA |
| Jan 2025 | 31 | 2 | 1 | 0 | UA |
| Dec 2024 | 33 | 6 | 0 | 0 | UA |
| Nov 2024 | 48 | 6 | 0 | 0 | UA |
| Oct 2024 | 48 | 7 | 0 | 1 | UA |
| Sep 2024 | 48 | 5 | 0 | 0 | UA |
| Aug 2024 | 50 | 6 | 2 | 0 | UA |
| Jul 2024 | 54 | 7 | 1 | 0 | UA |
| Jun 2024 | 31 | 2 | 0 | 0 | UA |
| May 2024 | 31 | 3 | 0 | 0 | UA |
| Apr 2024 | 30 | 7 | 0 | 0 | UA |
| Mar 2024 | 31 | 6 | 0 | 0 | UA |
| Jan 2024 | 31 | 1 | 0 | 0 | UA |
| Dec 2023 | 42 | 5 | 0 | 0 | UA |
| Nov 2023 | 48 | 7 | 0 | 0 | UA |
SFO–BWI seasonal on-time pattern
Best: October (90.2%) · weakest: June (79.2%)
Strongest calendar month
October
90.2% on-time · ~55 flights/mo
Busiest calendar month
July
~66 flights/mo avg
Weakest calendar month
June
79.2% on-time · ~58 flights/mo
Cancellation Rate
0.4%
6 of 1,397 flights
Diversion Rate
0.5%
7 of 1,397 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
SFO on-time profileBWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
BWI on-time profileCompare the two airports
See SFO and BWI side by side on delays, cancellations, and reliability.
Compare SFO vs BWIOrigin-hub reliability standing
Mid-pack among SFO departures
From SFO, this corridor sits with 50 other 75–85% on-time routes out of 73 tracked departures, not the hub's reliability leaders (20 at ≥85%) and not the softest ( 3 below 75%). Destination: Baltimore · fleet on-time rank #1384 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SFO–BWI.
Routes with a similar on-time rate
What the Data Says About SFO to BWI
Bureau of Transportation Statistics records show San Francisco to Baltimore (SFO to BWI) running a 84.6% on-time rate over 2,309 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 50.4 minutes. The 2,457-mile corridor is served by 3 carriers, and over the last 24 months 0.4% of 1,397 flights were cancelled, 0.5% diverted.
Monthly performance varies moderately here: Apr 2025 was the strongest month at 89% on-time versus Aug 2025 at 74%, a 15-point difference.
On the multi-year calendar, SFO–BWI peaks in October at 90.2% on-time while July carries the heaviest traffic (~66 flights per month) ; the softest month is June at 79.2%, a 11.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SFO to BWI rank among US routes by traffic? ▼
How often are flights delayed from SFO to BWI? ▼
What is the cancellation rate for SFO to BWI? ▼
How far is the flight from SFO to BWI? ▼
When is the best time to fly from SFO to BWI? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using SFO–BWI data
SFO–BWI runs 5.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare SFO and BWI airport profiles: delay causes and top routes differ even on the same corridor. SFO airport
- If your dates flex, October (90.2% on-time) beats June (79.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.6% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.